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Unlike humans, chimpanzees don't go through menopause
12-13-2007 · EurekAlert!Researchers have found no evidence that chimpanzees in the wild undergo menopause in the way that women do, according to a new report published online on Dec. 13 in Current Biology, a Cell Press publication. That's despite the fact that reproduction tends to peter out at a similar age in both species.
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Keywords: unlike, humans, chimpanzees, through, menopause, human, chimpanzee
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- Spread of endogenous retrovirus K is similar in the DNA of humans and rhesus monkeys
10-09-2007 · EurekAlert!
Research by Romano and colleagues, studying the population dynamics of complete copies of primate endogenous retrovirus family K in the genomes of humans, chimpanzee and rhesus monkey, revealed a surprising pattern. The paper, published on Oct. 10 in PLoS ONE, shows that human ERV-K had a similar demographic signature to that of the rhesus monkey, both differing greatly from that of the chimpanzee.
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- Computer savvy canines
11-28-2007 · EurekAlert!
Like us, our canine friends are able to form abstract concepts. Friederike Range and colleagues from the University of Vienna in Austria have shown for the first time that dogs can classify complex color photographs and place them into categories in the same way that humans do. And the dogs successfully demonstrate their learning through the use of computer automated touch-screens, eliminating potential human influence. The study has just been published online in Animal Cognition.
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- Comparing chimp and human DNA
10-12-2006 · EurekAlert!
Scientists look to the chimpanzee genome to better understand our own. In a new study, researchers used comparative genomics to investigate the properties of a set of 202 carefully screened "highly accelerated regions." They searched for stretches of DNA that were highly conserved between chimpanzees, mice and rats, comparing those sequences to the human genome sequence in order to unravel the evolutionary forces at work behind the human genome's fastest evolving regions.
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- Scientists find cultural differences among chimpanzee colonies
01-09-2008 · EurekAlert!
Socially-learned cultural behavior thought to be unique to humans is also found among chimpanzees colonies, scientists at the University of Liverpool have found.
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- Ancient retrovirus sheds light on modern pandemic
06-21-2007 · EurekAlert!
Human resistance to a retrovirus that infected chimpanzees and other nonhuman primates four million years ago ironically may be at least partially responsible for the susceptibility of humans to HIV infection today.
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- 454 Life Sciences and Max Planck publish sequence of one million base pairs
11-15-2006 · EurekAlert!
454 Life Sciences today announced that comparison of the human and chimpanzee genomes to Neandertal DNA sequences determined by 454 Sequencing reveals that modern human and Neandertal DNA sequences diverged on average about 500,000 years ago and the effective size of the ancestral population of the two groups was similar to that of modern humans.
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- Human-like altruism shown in chimpanzees
06-25-2007 · EurekAlert!
Experimental evidence reveals that chimpanzees will help other unrelated humans and conspecifics without a reward, showing that they share crucial aspects of altruism with humans.
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- Humans inhabited New World's doorstep for 20,000 years
02-12-2008 · EurekAlert!
The human journey from Asia to the New World was interrupted by a 20,000-year layover in Beringia. Furthermore, the New World was colonized by approximately 1,000 to 5,000 people -- a substantially higher number than the 100 individuals of previous estimates. The developments, published in Wednesday's PLoS ONE, help shape understanding of how the Americas came to be populated -- not through a single expansion event but in three distinct stages separated by thousands of generations.
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- Male chimpanzees prefer mating with old females
11-20-2006 · EurekAlert!
Researchers studying chimpanzee mating preferences have found that although male chimpanzees prefer some females over others, they prefer older, not younger, females as mates. The findings uncover a stark contrast between chimpanzee behavior and that of humans, their primate cousins.
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- Neuron cell stickiness may hold key to evolution of the human brain
11-02-2006 · EurekAlert!
The stickiness of human neurons may have been a key factor in why the human brain evolved beyond the brains of our primate relatives. In a study comparing the genomes of humans, chimpanzees and other vertebrates, researchers at the US Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and Joint Genome Institute (JGI) found a strikingly high degree of genetic differences in DNA sequences that appear to regulate genes involved in nerve cell adhesion molecules.
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